Coal-saving composition.



UNITED TATES '1 FFICE..-

THOMAS HILLERY, OF SALEM, MASSACHUSETTS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO KOALE SAVA MANUFACTURING COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF WEST VIRGINIA.

COAL-"SAVING COMPOSITION.

SPECIFICATION forming part of Letters Patent No. 688,782, dated December 10, 1901. Application filed May 6, 1901. Serial No. 58,975. (No specimens.)

T at whom, it may concern.-

Be it known that I, THOMAS HILLERY, of Salem, in the county of Essex and State of Massachusettsmave invented certain new and useful Improvements in Coal-Saving Composition, of which the following is a specification.

This invention has for its object to provide a composition of matter adapted when mixed I0 with burning coal to increase the efficiency of the combustion and prevent or minimize the formation of clinkers.

The invention consists in the improved composition hereinafter described and claimed.

T5 In making said composition I mix the following ingredients in about the proportions hereinafter specified: mineral salt of the kind known as coarse fine-that is to say, reduced to smaller fragments than ordinary rock salt and not powdered like table-salt two thousand pounds; copperas, one hundred pounds; powdered charcoal, twenty five pounds; saltpeter, fifteen pounds, and bicarbonate of soda fifteen pounds.

This composition is used by sprinkling it upon burning coal, about three pounds of the composition being suflicient for one ton of coal.

The composition increases the efficiency and completeness of the combustion, this result being due to the combination of the salt and copperas with other ingredients. I find that in most cases when the composition is used the coal is reduced entirely to ashes, no clinkers being formed.

The copperas counteracts the corroding effect on the surfaces with which the products of combustion come in contact, which effect would otherwise result from the action of the salt.

I claim- The improved composition consisting of mineral salt, copperas,charcoal,saltpeter, and bicarbonate of soda.

In testimony whereof I have affixed my signature in presence of two witnesses.

THOMAS HILLERY.

\Vitnesses:

B. E. Fnos'r, O. F. BROWN. 

